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Ulcerative colitis (UC) is a chronic non‐specific inflammatory disease of the intestines with a high prevalence. Polymer‐prepared nanoparticles are well‐targeted, highly biocompatible, and have high potential for personalized therapy. Polymer nanoparticles are able to achieve localized therapy through their unique design. First, this review compares the advantages and disadvantages of natural and synthetic polymeric materials as well as describes the application of polymeric nanoparticles in UC therapy. Then, the preparation, characterization methods, and current challenges of common polymer nanoparticles are presented. Next, one‐by‐one examples of polymer nanoparticle‐targeted drug delivery strategies for the treatment of UC are presented. In addition, polymer nanoparticle‐based therapeutic approaches for UC, including anti‐inflammatory therapies, reactive oxygen species scavenging therapies, and intestinal flora modulation therapies, are presented. Finally, future research directions for polymer nanoparticles in UC therapy are discussed and current challenges are identified. The aim of this paper is to provide valuable references and guidance for researchers to design and develop novel UC therapies. [ABSTRACT FROM AUTHOR]

Material is the basis of Urban Public Facilities Design (UPFD). The reasonable selection and application of materials directly affect the product design of city public facilities. Combined with the model and the relevant theories, this article analyses the principles of material applied in Urban Public Facilities Design (UPFD), shows the specific impact factors and results of material's material attributes and cultural attributes to the structure and appearance of public facilities, and sums up the Sustainable Development of Materials (SDM) is contributed to improve the development requirements of public facilities design, as well as how to achieve environmental protection. The theoretical results not only can be applied to urban public facilities design practice, also to modelling design and structure design of the other industrial product. [ABSTRACT FROM AUTHOR]